Hugh mcdougall



(N0 ModeL) H. McDOUG-ALL.

BUTTON.

No. 366,419. Patented July 12, 1887.

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UNITED STATES PATENT OFFICE.

HUGH MODOUGALL, OF BROOKLYN, NE\V YORK.

BUTTON.

SPECIFICATION forming part of Letters Patent No. 366,419, dated July 12, 1887.

Application filed November 11 1886. Serial No. 218,510. (No model.)

To all whom it may concern:

Be it known that 1, HUGH MODOUGALL, of Brooklyn, in the county of Kings and State of New York, have invented a new and useful Improvement in Buttons and Studs, of which the following is a specification.

My invention, although applicable more particularly to collar-buttons, may be embodied in studs, sleeve-buttons, and other buttons having ahead and a foot or shoe rigidly connected together by a post or shank.

My invention relates to those buttons which are composed of two parts respectively forming a head and shoe, and each of which is pro vided with a post portion, the post portion of the head being telescoped or inserted into and secured within the tubular post portion of the shoe.

My invention consists in a button, hereinafter described, and composed of a tubular post portion and a shoe formed integral therewith, and a head having a solid post portion secured in the tubular post portion, and having radial strengthening-ribs at the junction of said post portion with the head.

The invention also consists in a button consisting of a tubular post portion and shoe formed integral, and having radial strengthening-ribs at the junction of the post portion and shoe, and having an internal shoulder in the post portion, a head having a post portion entering and secured in the post portion of the shoe by riveting or upsetting its end into engagement with the shoulder in the tubular post portion.

In the accompanying drawings, Figure 1 is an axial section of a button embodying my invention, and which has its shoe and post portion formed of sheet or plate metal. Fig. 2 is an inverted plan of the head and its post portion. Fig. 3 is a horizontal section upon the plane of the dotted line at m, Fig. 1. Fig. 4 is an axial section of a shoe and solid post portion such as might be produced by means of suitable dies in a drop-press. Fig. 5 is a plan of such shoe; and Fig. 6 is a horizontal section, on the plane of the dotted line 3 Fig. 4, of such shoe and post portion after the post portion has been bored out or drilled to receive the post portion of the head.

Similar letters of reference designate corresponding parts in the several figures, and all the figures are made upon a scale larger than actual size, in order to more clearly represent the invention.

Referring first to Figs. 1, 2, and 3, B designates the head, and O the shoe or foot, of a button. The post, which rigidly connects the head and shoe, is formed of two parts, one post portion, B, being formed integral with the head B, and projecting downward, and the other post portion, 0, being formed integral'with the shoe 0, and projecting upward therefrom. In this example the head B and its solid post portion B are formed of a single piece of metal, which may be suitably shaped by means of dies in a drop-press; and in order to strengthen the head at its junction with the post portion B, I form at that point the radial strengtheningribs I), of which any number may be made, and which may be produced in the operation of forming the head B by dies without any additional expense. In collar-buttons the inner post portion will be small in diameter, and a very small quantity of metal formed into the strengthening-ribs b will greatly add to the strength of the button at thejunction of the post portion B with the head B. In this example of my invention the shoe 0, with its tubular post portion 0, are formed by means of suitable dies or by a spinning operation from sheet or plate metal, and the post portion 0 receives within it the post portion B. I have here represented the post portion 0 as provided near its upper end, or at about the middle of its length and considerably above the shoe, with an internal shoulder, 0, the bore of the post portion above said shoulder being less than its internal diameter below. After the post portion B is inserted into the tubular post portion O the end of the solid post portion B may be upset or riveted over, as shown at b, so as to form a firm engagement with the shoulder a, and in this way the two parts of the button may be permanently and very securely connected without the employment of any solder. The tubular post portion G has its circumference continuous or unbroken by any slits or kerfs, and hence the post portion B, when riveted over at the end, is securely retained therein.

In order to strengthen the shoe portion of the button at the junction of its tubular post portion 0 with the shoe 0, I have represented ICO strengthening-ribs 0. These hollow ribs 0, which are best illustrated in Fig. 3, are formed by outwardly corrugating or fluting th e'metal of which the shoe is composed. Such hollow ribs add greatly to the strength of the shoe portion of the button, and may be formed with little, if any, additional expense.

Instead of making the shoe portion of the button of sheet or plate metal, I may produce the shoe and its post portion 0 G in the form of a solid piece by means of drop-dies, as represented in Fig. 4, and insuch case the strengtln ening-ribs 0 will be formedsolid, as are the strengthening-ribs b at the junction of the post portion B and head B. Having first produced the shoe 0 with a solid post portion, 0, the latter is bored out, as shown in Fig. 6, to receive the solid post portion B of the head, and

the two parts may then be secured together,

as illustrated in Fig. 1.

The strengthening-ribs b 0, provided at the junction of the post portions with a head and shoe, are desirable, as they enable those parts (the head and shoe) to be made of thinner metal than would otherwise be possible, and such saving of metal without impairing the strength is afeature of the first importancein gold buttons. It is also important to form a shoulder within the tubular-post portion at a point as far above the shoe as practicable, because the solid post portion 13 can then be made of less length than it could be if the shoulder were at the bottom of a tubular post portion having a shoe formed integral therewith, and having radial strengthening-ribs c at the junction of the post portion and shoe, andhaving an internal shoulder, and a head having a post portion entering and secured in the post portion of the shoe by riveting or upsetting its end into engagement with the said shoulder, substantially as herein set forth.

' HUGH MQDOUGALL.

l/Vitnesses:

O. HALL, FREDK. HAYNES. 

